Question

hey i have an 04 vw vr6 and p0134 pops up every now and then. i have a scanner so i delete it when it comes on, i replaced the o2 and it still comes on sometimes, i checked the eletrical plugs and it was plugged in. most important is that it only comes one when my cars idling for a long time. could this be injectors? which is making the fuel pressure weeker?

Answer 1

P0134 - 02 sensor no activity detected Bank 1 sensor 1

If this where injector you would have a lean air/fuel code. What you have is no activity , this can be from a MAF (mass air flow) . The heater 02 sensor fuse must be okay,and the coolant level must also be okay,